Hello, I Am 37 Weeks Pregnant With 3rd Pregnancy But

Hello, I am 37 weeks pregnant with 3rd pregnancy but feeling really nervous. Feeling vaginal pain and baby contracting moving from right to left but very hard. Is baby likely to come early? My other two children came at 38 weeks. They are 12 years old and 22 months old
My husband left me when I was 2 months pregnant so I am very nervous as I had quite a difficult pregnancy and hoping to have a good midwife